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Influence of non-level walking on pedometer accuracy.

Anthony S Leicht¹, Robert G Crowther

¹Institute of Sport and Exercise Science, James Cook University, Australia. Anthony.Leicht@jcu.edu.au

Journal of Science and Medicine in Sport

|March 22, 2008

Summary

The YAMAX Digiwalker SW-700 pedometer is accurate for incline walking up to 10%. However, it overestimates steps during stair climbing, especially during descent, which should be noted in studies.

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Area of Science:

Biomechanics
Human Movement Analysis
Wearable Technology Validation

Background:

The YAMAX Digiwalker SW-700 pedometer is validated for level walking.
Its accuracy during non-level activities and across genders is less understood.

Purpose of the Study:

To assess the YAMAX Digiwalker SW-700 pedometer's accuracy during incline walking and stair climbing.
To investigate the influence of gender on pedometer accuracy during these activities.

Main Methods:

Forty-six adults walked on a treadmill at inclines from 0-10%.
123 adults walked up and down stairs.
Pedometer accuracy was evaluated using step difference, net error, and absolute error.

Main Results:

Pedometer accuracy was good during incline walking up to 10%, with no significant gender differences.
Stair descent showed greater overestimation of steps compared to stair ascent.
Absolute error was higher during stair ascent than descent.

Conclusions:

The YAMAX Digiwalker SW-700 demonstrates good accuracy for incline walking.
Significant overestimation of steps occurs during stair walking, particularly descent.
Researchers should account for stair activity overestimation in field studies using this pedometer.